Hazelwood, MO Water Safety: 45/100 (2026)
1 ZIP code · 2 water systems · Updated 2026-06-03
Hazelwood ranks below average for tap water safety in MO — health-based violations are documented across multiple service areas in recent EPA monitoring data.
How Hazelwood Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Hazelwood Residents
- Homes built before 1986: 86% — older plumbing may contain lead solder.
- Estimated remediation: $3,400 per household.
- CDC health risk index: 12.49 — above typical levels.
Hazelwood's Water Providers
2 independent water providers serve Hazelwood, MO — 2 systems appear in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in Hazelwood, Missouri (population ~17,953), covering 2 community water systems serving approximately 1,111,345 people region-wide.
No EPA violations recorded across any ZIP codes in Hazelwood — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Hazelwood: D (45/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Hazelwood water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Hazelwood
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 63042 | D | Mo American St Louis St Charles Counties | 1,111,000 |
All ZIP Codes in Hazelwood
- 63042 [D]
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
Hazelwood Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Hazelwood Infrastructure Age
With 86% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
When more than half a city's housing predates the 1986 federal ban on lead solder, plumbing-era lead risk becomes a citywide concern rather than an exception. Hazelwood's median build year of 1962 places it squarely in that category.
Over half of homes in Hazelwood were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Hazelwood
At current Hazelwood valuations, the remediation share sits in the elevated tier — a level where deliberate financial planning becomes a practical prerequisite rather than a convenience for most homeowners.
At 2.5% of home value, remediation costs in Hazelwood represent a significant financial burden. For homes valued near the median, fixing water and safety issues could cost $2,100–$5,600. Home values here are 21% below the Missouri average.
Hazelwood: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Routinely in Hazelwood, where 86% of housing predates the solder ban and aggregate utility readings hover near the federal threshold, a faucet-level draw functions as a standard household step for families with small kids.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Hazelwood: Flood History & Water Damage Risk
Measured across the NFIP's multi-decade tracking period, Hazelwood shows a moderate flood record — 360 claims and 100% of ZIP codes carrying FEMA flood zone status. For water quality, that combination matters because flood events at this frequency can periodically stress infrastructure: treatment plants, private wells, and distribution systems all face elevated risk during significant flooding.
Hazelwood has a moderate flood history with 360 FEMA claims averaging $62,231 per payout. 100% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. Flood damage can add significantly to the estimated <strong>$3,400</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Hazelwood
- Test your water at home. City-level data shows averages — your tap may differ. NSF-certified test kits cost $20-40 and give results in days.
- Install a certified water filter. An NSF-certified pitcher or under-sink filter removes most common contaminants.
- Check your home's plumbing. With 86% of homes built before 1986, lead solder is a real possibility.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Hazelwood, MO